The Swedish Mammography Cohort (SMC) 2009 lifestyle

The Swedish Mammography Cohort (SMC) is a large population-based cohort of over 60,000 women in the counties of Uppsala and Västmanland. All women born 1914-1948 who were residing in Västmanland and Uppsala County and in the years 1987-1990 received an invitation to participate in a mammography screening programme were asked to answer a questionnaire about diet and lifestyle. Approximately 66,000 women answered the questionnaire. In the autumn 1997, a second survey was sent to these women to update the information about their eating habits. Additional follow-ups were done 2008/2009 and 2019. The study examine associations of environmental/modifiable risk factors with several cancer sites (e.g., breast, colorectal, endometrium, ovary, and renal cell cancer), myocardial infarction, stroke, osteoporosis, cataracts, as well as death causes. The study has a longitudinal design, and to complement the update on exposure data record linkages to the nationwide Cancer Register, the In-Patient Register, and the Cause of Death Register and Population Register are also done. The questionnaires used in the Swedish Mammography Cohort are the same as the ones that have been used in the Cohort of Swedish Men (COSM). For updated information on questionnaires and variable lists please visit https://www.simpler4health.se/researchers. Purpose: The general aim of the Swedish Mammography Cohort (SMC) is to assess relationships between a number of modifiable factors (diet, vitamin supplement use, physical activity, smoking, alcohol, body weight, other anthropometric measures etc.) and the occurrence of several major chronic diseases. For more detailed information please visit the SIMPLER website, https://www.simpler4health.se/researchers/cohorts. For restrictions in data use see https://www.simpler4health.se/researchers/rules-and-guidelines and https://www.simpler4health.se/researchers/publication-policy. All cohort members who received the 2008 Health questionnaire was sent a fourth questionnaire in 2009. The questionnaire collected information on diet (132-item food frequency questionnaire), dietary supplements, smoking, physical activity, and sun habits. The questionnaire can be found at https://www.simpler4health.se/researchers/questionnaires.